Search results for "Multilevel converter"

showing 4 items of 4 documents

The Effect of the Harmonic Content Generated by AC/DC Modular Multilevel Converters on HVDC Cable Systems

2019

With the increasing penetration of renewable and decentralized energy sources into the power grid, an extended use of DC voltages is expected on both distribution and transmission levels. Generation of DC voltages by means of voltage source converters is associated with a wide spectrum of harmonic distortions at converter terminals, both on the ac and on the dc sides. This can lead to partial discharges in power cables, which deteriorate insulation material thus weakening its performance and reducing cable life-time. In the previously published paper, the effect of harmonic distortion on appearance of partial discharges in cable insulation was evaluated. Here, the study related to the PD be…

010302 applied physicsTotal harmonic distortionbusiness.industryComputer scienceripple020209 energyElectrical engineering02 engineering and technologyDC streConvertersmultilevel converter01 natural sciencesHarmonic analysisSynchronization (alternating current)partial dischargeSettore ING-IND/31 - ElettrotecnicaharmonicHarmonics0103 physical sciences0202 electrical engineering electronic engineering information engineeringHarmonicPDWaveformVoltage sourcebusiness2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)
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Experimental study on B-spline-based modulation schemes applied in multilevel inverters for electric drive applications

2019

This work presents the design, simulation, and experimental validation of new B-Spline-based modulation techniques applied to a Multilevel Power Inverter (MPI), particularly focusing the attention on the harmonic content of the output voltages of the inverter. Simulation and experimental results are proposed and discussed, mainly describing the potential benefits, such as the increase of the multi-level operation of the converter, and drawbacks (low-order harmonics) related to the adoption of B-Spline functions for multilevel inverters applied in the field of electrical drives.

Control and OptimizationComputer science020209 energyPower inverterPower conversion harmonicEnergy Engineering and Power Technology02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricimodular multilevel convertersSettore ING-INF/01 - ElettronicaField (computer science)0202 electrical engineering electronic engineering information engineeringElectronic engineeringElectrical and Electronic EngineeringEngineering (miscellaneous)power conversion harmonicsRenewable Energy Sustainability and the EnvironmentB-spline020208 electrical & electronic engineeringModular multilevel converterPulse width modulation invertersSettore ING-IND/31 - ElettrotecnicaModulationHarmonicsHarmonicInverterEnergy (miscellaneous)Voltage
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Experimental Investigation on the Performances of a Multilevel Inverter Using a Field Programmable Gate Array-Based Control System

2019

The Field Programmable Gate Array (FPGA) represents a valid solution for the design of control systems for inverters adopted in many industry applications, because of both its high flexibility of use and its high-performance with respect to other types of digital controllers. In this context, this paper presents an experimental investigation on the harmonic content of the voltages produced by a three-phase, five level cascaded H-Bridge Multilevel inverter with an FPGA-based control board, aiming also to evaluate the performance of the FPGA through the implementation of the main common modulation techniques and the comparison between simulation and experimental results. The control algorithm…

Control and Optimizationmultilevel convertersrenewable energiesComputer scienceEnergy Engineering and Power TechnologyMultilevel converterContext (language use)Renewable energieSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricilcsh:TechnologyVHDLElectronic engineeringElectrical and Electronic EngineeringField-programmable gate arrayEngineering (miscellaneous)FPGAcomputer.programming_languageTotal harmonic distortionRenewable Energy Sustainability and the Environmentlcsh:TSettore ING-IND/31 - ElettrotecnicaControl systemHarmonicInvertercomputerPulse-width modulationEnergy (miscellaneous)VoltageEnergies
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Partial Discharge Measurements under DC Voltages Containing Harmonics Produced by Power Electronic Devices

2018

Partial Discharge (PD) monitoring is one of the main diagnostic instrument to evaluate the reliability of modern electrical transmission and distribution systems. The widespread use of High voltage dc (HVDC) connections increase the demand of voltage source converters (VSCs) which, as a consequence, has brought about new challenges in the field of partial discharge measurements. In fact, the output voltage waveforms generated by AC/DC modular multilevel converters (MMCs) are affected by a significant harmonic content which influences the Partial Discharges (PDs) activity. For this reason, previous research mainly investigated the PD phenomenon on the AC side of the converter. The aim of the…

Materials science020209 energyRippleMultilevel converterPower electronic device02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesDCPartial discharge0103 physical sciences0202 electrical engineering electronic engineering information engineeringVoltage sourceElectrical and Electronic Engineering010302 applied physicsbusiness.industryElectronic Optical and Magnetic MaterialElectrical engineeringHarmonicHigh voltageDC streSettore ING-IND/31 - ElettrotecnicaElectric power transmissionHarmonicsPartial dischargeHarmonicbusinessVoltage
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